1 #include <linux/kernel.h>
4 #include <linux/errno.h>
5 #include <linux/string.h>
6 #include <linux/blkdev.h>
7 #include <linux/blkpg.h>
8 #include <linux/cdrom.h>
9 #include <linux/delay.h>
11 #include <asm/uaccess.h>
13 #include <scsi/scsi.h>
14 #include <scsi/scsi_dbg.h>
15 #include <scsi/scsi_device.h>
16 #include <scsi/scsi_eh.h>
17 #include <scsi/scsi_host.h>
18 #include <scsi/scsi_ioctl.h>
19 #include <scsi/scsi_cmnd.h>
27 /* The sr_is_xa() seems to trigger firmware bugs with some drives :-(
28 * It is off by default and can be turned on with this module parameter */
29 static int xa_test = 0;
31 module_param(xa_test, int, S_IRUGO | S_IWUSR);
33 /* primitive to determine whether we need to have GFP_DMA set based on
34 * the status of the unchecked_isa_dma flag in the host structure */
35 #define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0)
38 static int sr_read_tochdr(struct cdrom_device_info *cdi,
39 struct cdrom_tochdr *tochdr)
41 struct scsi_cd *cd = cdi->handle;
42 struct packet_command cgc;
44 unsigned char *buffer;
46 buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
50 memset(&cgc, 0, sizeof(struct packet_command));
51 cgc.timeout = IOCTL_TIMEOUT;
52 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
53 cgc.cmd[8] = 12; /* LSB of length */
57 cgc.data_direction = DMA_FROM_DEVICE;
59 result = sr_do_ioctl(cd, &cgc);
61 tochdr->cdth_trk0 = buffer[2];
62 tochdr->cdth_trk1 = buffer[3];
68 static int sr_read_tocentry(struct cdrom_device_info *cdi,
69 struct cdrom_tocentry *tocentry)
71 struct scsi_cd *cd = cdi->handle;
72 struct packet_command cgc;
74 unsigned char *buffer;
76 buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
80 memset(&cgc, 0, sizeof(struct packet_command));
81 cgc.timeout = IOCTL_TIMEOUT;
82 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
83 cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0;
84 cgc.cmd[6] = tocentry->cdte_track;
85 cgc.cmd[8] = 12; /* LSB of length */
88 cgc.data_direction = DMA_FROM_DEVICE;
90 result = sr_do_ioctl(cd, &cgc);
92 tocentry->cdte_ctrl = buffer[5] & 0xf;
93 tocentry->cdte_adr = buffer[5] >> 4;
94 tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
95 if (tocentry->cdte_format == CDROM_MSF) {
96 tocentry->cdte_addr.msf.minute = buffer[9];
97 tocentry->cdte_addr.msf.second = buffer[10];
98 tocentry->cdte_addr.msf.frame = buffer[11];
100 tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8)
101 + buffer[10]) << 8) + buffer[11];
107 #define IOCTL_RETRIES 3
109 /* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives
110 are emulating a SCSI device via the idescsi module, they need to have
111 CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */
113 static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti)
115 struct cdrom_tocentry trk0_te, trk1_te;
116 struct cdrom_tochdr tochdr;
117 struct packet_command cgc;
120 ret = sr_read_tochdr(cdi, &tochdr);
124 ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1;
126 if (ti->cdti_trk1 == ntracks)
127 ti->cdti_trk1 = CDROM_LEADOUT;
128 else if (ti->cdti_trk1 != CDROM_LEADOUT)
131 trk0_te.cdte_track = ti->cdti_trk0;
132 trk0_te.cdte_format = CDROM_MSF;
133 trk1_te.cdte_track = ti->cdti_trk1;
134 trk1_te.cdte_format = CDROM_MSF;
136 ret = sr_read_tocentry(cdi, &trk0_te);
139 ret = sr_read_tocentry(cdi, &trk1_te);
143 memset(&cgc, 0, sizeof(struct packet_command));
144 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
145 cgc.cmd[3] = trk0_te.cdte_addr.msf.minute;
146 cgc.cmd[4] = trk0_te.cdte_addr.msf.second;
147 cgc.cmd[5] = trk0_te.cdte_addr.msf.frame;
148 cgc.cmd[6] = trk1_te.cdte_addr.msf.minute;
149 cgc.cmd[7] = trk1_te.cdte_addr.msf.second;
150 cgc.cmd[8] = trk1_te.cdte_addr.msf.frame;
151 cgc.data_direction = DMA_NONE;
152 cgc.timeout = IOCTL_TIMEOUT;
153 return sr_do_ioctl(cdi->handle, &cgc);
156 static int sr_play_trkind(struct cdrom_device_info *cdi,
160 struct scsi_cd *cd = cdi->handle;
161 struct packet_command cgc;
164 memset(&cgc, 0, sizeof(struct packet_command));
165 cgc.timeout = IOCTL_TIMEOUT;
166 cgc.cmd[0] = GPCMD_PLAYAUDIO_TI;
167 cgc.cmd[4] = ti->cdti_trk0;
168 cgc.cmd[5] = ti->cdti_ind0;
169 cgc.cmd[7] = ti->cdti_trk1;
170 cgc.cmd[8] = ti->cdti_ind1;
171 cgc.data_direction = DMA_NONE;
173 result = sr_do_ioctl(cd, &cgc);
174 if (result == -EDRIVE_CANT_DO_THIS)
175 result = sr_fake_playtrkind(cdi, ti);
180 /* We do our own retries because we want to know what the specific
181 error code is. Normally the UNIT_ATTENTION code will automatically
182 clear after one error */
184 int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
186 struct scsi_device *SDev;
187 struct scsi_sense_hdr sshdr;
188 int result, err = 0, retries = 0;
189 struct request_sense *sense = cgc->sense;
194 sense = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
202 if (!scsi_block_when_processing_errors(SDev)) {
207 memset(sense, 0, sizeof(*sense));
208 result = scsi_execute(SDev, cgc->cmd, cgc->data_direction,
209 cgc->buffer, cgc->buflen, (char *)sense,
210 cgc->timeout, IOCTL_RETRIES, 0);
212 scsi_normalize_sense((char *)sense, sizeof(*sense), &sshdr);
214 /* Minimal error checking. Ignore cases we know about, and report the rest. */
215 if (driver_byte(result) != 0) {
216 switch (sshdr.sense_key) {
220 printk(KERN_INFO "%s: disc change detected.\n", cd->cdi.name);
225 case NOT_READY: /* This happens if there is no disc in drive */
226 if (sshdr.asc == 0x04 &&
227 sshdr.ascq == 0x01) {
228 /* sense: Logical unit is in process of becoming ready */
230 printk(KERN_INFO "%s: CDROM not ready yet.\n", cd->cdi.name);
231 if (retries++ < 10) {
232 /* sleep 2 sec and try again */
236 /* 20 secs are enough? */
242 printk(KERN_INFO "%s: CDROM not ready. Make sure there is a disc in the drive.\n", cd->cdi.name);
244 scsi_print_sense_hdr("sr", &sshdr);
248 case ILLEGAL_REQUEST:
250 if (sshdr.asc == 0x20 &&
252 /* sense: Invalid command operation code */
253 err = -EDRIVE_CANT_DO_THIS;
255 __scsi_print_command(cgc->cmd);
256 scsi_print_sense_hdr("sr", &sshdr);
260 printk(KERN_ERR "%s: CDROM (ioctl) error, command: ", cd->cdi.name);
261 __scsi_print_command(cgc->cmd);
262 scsi_print_sense_hdr("sr", &sshdr);
267 /* Wake up a process waiting for device */
275 /* ---------------------------------------------------------------------- */
276 /* interface to cdrom.c */
278 int sr_tray_move(struct cdrom_device_info *cdi, int pos)
280 Scsi_CD *cd = cdi->handle;
281 struct packet_command cgc;
283 memset(&cgc, 0, sizeof(struct packet_command));
284 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
285 cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
286 cgc.data_direction = DMA_NONE;
287 cgc.timeout = IOCTL_TIMEOUT;
288 return sr_do_ioctl(cd, &cgc);
291 int sr_lock_door(struct cdrom_device_info *cdi, int lock)
293 Scsi_CD *cd = cdi->handle;
295 return scsi_set_medium_removal(cd->device, lock ?
296 SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
299 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
301 struct scsi_cd *cd = cdi->handle;
302 struct scsi_sense_hdr sshdr;
303 struct media_event_desc med;
305 if (CDSL_CURRENT != slot) {
306 /* we have no changer support */
309 if (0 == scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES,
313 if (!cdrom_get_media_event(cdi, &med)) {
314 if (med.media_present)
316 else if (med.door_open)
317 return CDS_TRAY_OPEN;
323 * 0x04 is format in progress .. but there must be a disc present!
325 if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04)
329 * If not using Mt Fuji extended media tray reports,
330 * just return TRAY_OPEN since ATAPI doesn't provide
331 * any other way to detect this...
333 if (scsi_sense_valid(&sshdr) &&
334 /* 0x3a is medium not present */
338 return CDS_TRAY_OPEN;
340 return CDS_DRIVE_NOT_READY;
343 int sr_disk_status(struct cdrom_device_info *cdi)
345 Scsi_CD *cd = cdi->handle;
346 struct cdrom_tochdr toc_h;
347 struct cdrom_tocentry toc_e;
348 int i, rc, have_datatracks = 0;
350 /* look for data tracks */
351 rc = sr_read_tochdr(cdi, &toc_h);
353 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
355 for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) {
356 toc_e.cdte_track = i;
357 toc_e.cdte_format = CDROM_LBA;
358 if (sr_read_tocentry(cdi, &toc_e))
360 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
365 if (!have_datatracks)
374 int sr_get_last_session(struct cdrom_device_info *cdi,
375 struct cdrom_multisession *ms_info)
377 Scsi_CD *cd = cdi->handle;
379 ms_info->addr.lba = cd->ms_offset;
380 ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
385 int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
387 Scsi_CD *cd = cdi->handle;
388 struct packet_command cgc;
389 char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
395 memset(&cgc, 0, sizeof(struct packet_command));
396 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
397 cgc.cmd[2] = 0x40; /* I do want the subchannel info */
398 cgc.cmd[3] = 0x02; /* Give me medium catalog number info */
402 cgc.data_direction = DMA_FROM_DEVICE;
403 cgc.timeout = IOCTL_TIMEOUT;
404 result = sr_do_ioctl(cd, &cgc);
406 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
407 mcn->medium_catalog_number[13] = 0;
413 int sr_reset(struct cdrom_device_info *cdi)
418 int sr_select_speed(struct cdrom_device_info *cdi, int speed)
420 Scsi_CD *cd = cdi->handle;
421 struct packet_command cgc;
424 speed = 0xffff; /* set to max */
426 speed *= 177; /* Nx to kbyte/s */
428 memset(&cgc, 0, sizeof(struct packet_command));
429 cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
430 cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
431 cgc.cmd[3] = speed & 0xff; /* LSB */
432 cgc.data_direction = DMA_NONE;
433 cgc.timeout = IOCTL_TIMEOUT;
435 if (sr_do_ioctl(cd, &cgc))
440 /* ----------------------------------------------------------------------- */
441 /* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
442 /* because the generic cdrom driver does the user access stuff for us. */
443 /* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
444 /* sr_disk_status interface for the generic cdrom driver. */
446 int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
449 case CDROMREADTOCHDR:
450 return sr_read_tochdr(cdi, arg);
451 case CDROMREADTOCENTRY:
452 return sr_read_tocentry(cdi, arg);
453 case CDROMPLAYTRKIND:
454 return sr_play_trkind(cdi, arg);
460 /* -----------------------------------------------------------------------
461 * a function to read all sorts of funny cdrom sectors using the READ_CD
464 * lba: linear block address
465 * format: 0 = data (anything)
469 * 4 = data (mode 2 form1)
470 * 5 = data (mode 2 form2)
471 * blksize: 2048 | 2336 | 2340 | 2352
474 static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
476 struct packet_command cgc;
479 printk("%s: sr_read_cd lba=%d format=%d blksize=%d\n",
480 cd->cdi.name, lba, format, blksize);
483 memset(&cgc, 0, sizeof(struct packet_command));
484 cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */
485 cgc.cmd[1] = ((format & 7) << 2);
486 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
487 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
488 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
489 cgc.cmd[5] = (unsigned char) lba & 0xff;
506 cgc.buflen = blksize;
507 cgc.data_direction = DMA_FROM_DEVICE;
508 cgc.timeout = IOCTL_TIMEOUT;
509 return sr_do_ioctl(cd, &cgc);
513 * read sectors with blocksizes other than 2048
516 static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
518 struct packet_command cgc;
521 /* we try the READ CD command first... */
522 if (cd->readcd_known) {
523 rc = sr_read_cd(cd, dest, lba, 0, blksize);
524 if (-EDRIVE_CANT_DO_THIS != rc)
526 cd->readcd_known = 0;
527 printk("CDROM does'nt support READ CD (0xbe) command\n");
528 /* fall & retry the other way */
530 /* ... if this fails, we switch the blocksize using MODE SELECT */
531 if (blksize != cd->device->sector_size) {
532 if (0 != (rc = sr_set_blocklength(cd, blksize)))
536 printk("%s: sr_read_sector lba=%d blksize=%d\n", cd->cdi.name, lba, blksize);
539 memset(&cgc, 0, sizeof(struct packet_command));
540 cgc.cmd[0] = GPCMD_READ_10;
541 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
542 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
543 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
544 cgc.cmd[5] = (unsigned char) lba & 0xff;
547 cgc.buflen = blksize;
548 cgc.data_direction = DMA_FROM_DEVICE;
549 cgc.timeout = IOCTL_TIMEOUT;
550 rc = sr_do_ioctl(cd, &cgc);
556 * read a sector in raw mode to check the sector format
557 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
560 int sr_is_xa(Scsi_CD *cd)
562 unsigned char *raw_sector;
568 raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd));
571 if (0 == sr_read_sector(cd, cd->ms_offset + 16,
572 CD_FRAMESIZE_RAW1, raw_sector)) {
573 is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
575 /* read a raw sector failed for some reason. */
580 printk("%s: sr_is_xa: %d\n", cd->cdi.name, is_xa);